Gets the project base point for the document. 
   Namespace:   Autodesk.Revit.DB  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 22.0.0.0 (22.1.0.0) 
  Since:  2020.2 
Syntax
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Parameters
- cda
-  Type:  Autodesk.Revit.DB Document  
 The document from which to get the project base point.
Return Value
The project base point of the document.Exceptions
| Exception | Condition | 
|---|---|
| Autodesk.Revit.Exceptions ArgumentNullException | A non-optional argument was null |